Riff, the youngest Tannen brother in the alternate 1986.
Riff Tannen was a brother to Biff Tannen, along with Cliff Tannen, in an alternate 1986. He was part of the notorious Tannen family mob, the fifth largest in California. As his aged father, Irving Tannen, is seen in 1986A, it is implied that because the elder Tannen was never convicted of his 1931 offenses, this gave him more of a free hand to father a family, whereas an imprisoned Kid Tannen found it difficult (but not impossible) to have sexual relationships with women.
It is unknown if Riff exists in the actual 1986. However, since there have never been shown to be characters exclusive to only one particular timeline in any previous form of BttF fiction, and that Biff has never been said outright to have been an only child, it is extremely likely Riff still existed in the regular timeline as well.
Riff wore a Fu Manchu and semi-long hair in a hairband, which during the late 1970s to the 1980s had been a popular style for men, particularly rockers.
No real details to his personality are shown, save for the usually Tannen prediliction for meanness.
